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<div class="subTitle">ar.com.hjg.pngj</div>
<h2 title="Interface IImageLineSet" class="title">Interface IImageLineSet&lt;T extends <a href="../../../../ar/com/hjg/pngj/IImageLine.html" title="interface in ar.com.hjg.pngj">IImageLine</a>&gt;</h2>
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<dt>All Known Implementing Classes:</dt>
<dd><a href="../../../../ar/com/hjg/pngj/pixels/ImageLineSetARGBbi.html" title="class in ar.com.hjg.pngj.pixels">ImageLineSetARGBbi</a>, <a href="../../../../ar/com/hjg/pngj/ImageLineSetDefault.html" title="class in ar.com.hjg.pngj">ImageLineSetDefault</a></dd>
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<pre>public interface <span class="strong">IImageLineSet&lt;T extends <a href="../../../../ar/com/hjg/pngj/IImageLine.html" title="interface in ar.com.hjg.pngj">IImageLine</a>&gt;</span></pre>
<div class="block">Set of <a href="../../../../ar/com/hjg/pngj/IImageLine.html" title="interface in ar.com.hjg.pngj"><code>IImageLine</code></a> elements.
 <p>
 This is actually a "virtual" set, it can be implemented in several ways; for example
 <ul>
 <li>Cursor-like: stores only one line, which is implicitly moved when requested</li>
 <li>All lines: all lines stored as an array of <tt>IImageLine</tt></li>
 <li>
 Subset of lines: eg, only first 3 lines, or odd numbered lines. Or a band of neighbours lines
 that is moved like a cursor.</li>
 The ImageLine that PngReader returns is hosted by a IImageLineSet (this abstraction allows the
 implementation to deal with interlaced images cleanly) but the library user does not normally
 needs to know that (or rely on that), except for the <a href="../../../../ar/com/hjg/pngj/PngReader.html#readRows()"><code>PngReader.readRows()</code></a> method.
 </ul></div>
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<td class="colFirst"><code><a href="../../../../ar/com/hjg/pngj/IImageLineSet.html" title="type parameter in IImageLineSet">T</a></code></td>
<td class="colLast"><code><strong><a href="../../../../ar/com/hjg/pngj/IImageLineSet.html#getImageLine(int)">getImageLine</a></strong>(int&nbsp;n)</code>
<div class="block">Asks for imageline corresponding to row <tt>n</tt> in the original image (zero based).</div>
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<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../ar/com/hjg/pngj/IImageLineSet.html#hasImageLine(int)">hasImageLine</a></strong>(int&nbsp;n)</code>
<div class="block">Returns true if the set contain row <tt>n</tt> (in the original image,zero based) currently
 allocated.</div>
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<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><strong><a href="../../../../ar/com/hjg/pngj/IImageLineSet.html#size()">size</a></strong>()</code>
<div class="block">Internal size of allocated rows This is informational, it should rarely be important for the
 caller.</div>
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<h4>getImageLine</h4>
<pre><a href="../../../../ar/com/hjg/pngj/IImageLineSet.html" title="type parameter in IImageLineSet">T</a>&nbsp;getImageLine(int&nbsp;n)</pre>
<div class="block">Asks for imageline corresponding to row <tt>n</tt> in the original image (zero based). This can
 trigger side effects in this object (eg, advance a cursor, set current row number...) In some
 scenarios, this should be consider as alias to (pseudocode)
 <tt>positionAtLine(n); getCurrentLine();</tt>
 <p>
 Throws exception if not available. The caller is supposed to know what he/she is doing</div>
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<h4>hasImageLine</h4>
<pre>boolean&nbsp;hasImageLine(int&nbsp;n)</pre>
<div class="block">Returns true if the set contain row <tt>n</tt> (in the original image,zero based) currently
 allocated.
 <p>
 If it's a single-cursor, this should return true only if it's positioned there. (notice that
 hasImageLine(n) can return false, but getImageLine(n) can be ok)</div>
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<h4>size</h4>
<pre>int&nbsp;size()</pre>
<div class="block">Internal size of allocated rows This is informational, it should rarely be important for the
 caller.</div>
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